What's the difference between flow and impedance?

Flow


Definition:

  • () imp. sing. of Fly, v. i.
  • (v. i.) To move with a continual change of place among the particles or parts, as a fluid; to change place or circulate, as a liquid; as, rivers flow from springs and lakes; tears flow from the eyes.
  • (v. i.) To become liquid; to melt.
  • (v. i.) To proceed; to issue forth; as, wealth flows from industry and economy.
  • (v. i.) To glide along smoothly, without harshness or asperties; as, a flowing period; flowing numbers; to sound smoothly to the ear; to be uttered easily.
  • (v. i.) To have or be in abundance; to abound; to full, so as to run or flow over; to be copious.
  • (v. i.) To hang loose and waving; as, a flowing mantle; flowing locks.
  • (v. i.) To rise, as the tide; -- opposed to ebb; as, the tide flows twice in twenty-four hours.
  • (v. i.) To discharge blood in excess from the uterus.
  • (v. t.) To cover with water or other liquid; to overflow; to inundate; to flood.
  • (v. t.) To cover with varnish.
  • (n.) A stream of water or other fluid; a current; as, a flow of water; a flow of blood.
  • (n.) A continuous movement of something abundant; as, a flow of words.
  • (n.) Any gentle, gradual movement or procedure of thought, diction, music, or the like, resembling the quiet, steady movement of a river; a stream.
  • (n.) The tidal setting in of the water from the ocean to the shore. See Ebb and flow, under Ebb.
  • (n.) A low-lying piece of watery land; -- called also flow moss and flow bog.

Example Sentences:

  • (1) An automated continuous flow sample cleanup system intended for rapid screening of foods for pesticide residues in fresh and processed vegetables has been developed.
  • (2) Models able to describe the events of cellular growth and division and the dynamics of cell populations are useful for the understanding of functional control mechanisms and for the theoretical support for automated analysis of flow cytometric data and of cell volume distributions.
  • (3) Both lymph flow from cannulated pancreatico-duodenal lymphatics and intralymphatic pressure in the non-transected ones increased significantly.
  • (4) Increased infusion flow rate did not increase the limiting frequency.
  • (5) Hepatic lymph flow increased only after ethacrynic acid and mannitol administration.
  • (6) Blood flow decreased immediately after skin expansion in areas over the tissue expander on days 0 and 1 and returned to baseline levels within 24 hours.
  • (7) These results could be explained by altered tissue blood flow and a decreased metabolic capacity of the liver in obese subjects.
  • (8) Arginine vasopressin further reduced papillary flow in kidneys perfused with high viscosity artificial plasma.
  • (9) Peak Expiratory Flow and Forced Expiratory Mean Flows in the ranges 0-25%, 25-50% and 50-75% of Forced Vital Capacity were significantly reduced in animals exposed to gasoline exhaust fumes, whereas the group exposed to ethanol exhaust fumes did not differ from the control group.
  • (10) Flow cytometric DNA analysis was performed on both fresh and on paraffin embedded samples obtained by gastroscopic biopsies in 5 patients with histologically normal gastric mucosa (20 specimens) and by radical gastrectomies in 9 cases of human gastric cancer (36 specimens).
  • (11) The stopped-flow technique was used to measure the rate constants for the reactions between the oxidized forms of peroxidase with luminol and the following substrates: p-iodophenol, p-bromophenol, p-clorophenol, o-iodophenol, m-iodophenol, luciferin, and 2-iodo-6-hydroxybenzothiazole.
  • (12) Blood flow was measured in leg and torso skin of conscious or anesthetized sheep by using 15-micron radioactive microspheres (Qm) and the 133Xe washout method (QXe).
  • (13) An axillo-axillary bypass procedure was performed in a high-risk patient with innominate arterial stenosis who had repeated episodes of transient cerebral ischemia due to decreased blood flow through the right carotid artery and reversal of blood flow through the right vertebral artery.
  • (14) Using an in vitro culture system, light scatter analyses, and two-color flow cytometry, we provide evidence that the interleukin-2 (IL-2) and transferrin receptors can be induced within 48 hr on nonproliferating immature thymocytes.
  • (15) These findings may not indicate a redistribution of renal blood flow through resistance changes in specific parts of the renal vasculature but may represent the consequences of focal cortical ischaemia, most prominent in the outer cortex.
  • (16) Excretion of inactive kallikrein again correlated with urine flow rate but the regression relationship between the two variables was different for water-load-induced and frusemide-induced diuresis.
  • (17) YM infused at 0.01 pmol.kg-1.min-1 did not cause any changes in urinary flow rate or Na excretion.
  • (18) The flow properties of white cells were tested after myocardial infarction, by measuring the filtration rates of cell suspensions through 8 microns pore filters.
  • (19) The effect of these drugs was estimated from the cell growth curve and DNA histogram determined by flow cytometry.
  • (20) Flow cytofluorometric analysis of the strain distribution of the molecules defined by the mAb revealed that two of the antibodies (I-22 and III-5) were directed against nonpolymorphic determinants of Thy-1, whereas V-8 mAb reacted only with Thy-1.2+ lymphocytes.

Impedance


Definition:

Example Sentences:

  • (1) The complication might have been prevented by measurements of U and I, reflecting changes in impedance or by measurements of catheter tip temperature (T).
  • (2) Technically speaking, this modality of brief psychotherapy is based on the nonuse of transferential interpretations, on impeding the regression od the patient, on facilitating a cognitice-affective development of his conflicts and thus obtain an internal object mutation which allows the transformation of the "past" into true history, and the "present" into vital perspectives.
  • (3) It was the purpose of this study to examine the relationship between body fluid compartments and multi-frequency bioelectrical impedance analysis (MF-BIA).
  • (4) For the different age categories the best prediction formula for the FFM from body impedance, sex, age and anthropometric variables was calculated.
  • (5) One is the right not to be impeded when they are going to the House of Commons to vote, which may partly explain why the police decided to arrest Green and raid his offices last week on Thursday, when the Commons was not sitting.
  • (6) HFV was delivered at frequencies (f) of 3, 6, and 9 Hz with a ventilator that generated known tidal volumes (VT) independent of respiratory system impedance.
  • (7) ECG and chest impedance were continuously monitored and recorded.
  • (8) Combined clinical observations, stroke volume measured by impedance cardiography, and ejection fractions calculated from systolic time intervals, all showed significant improvement in parallel with CoQ10 administration.
  • (9) The solution of these differential equations gives the velocity of the basilar membrane and hence other related quantities, e.g., displacement, pressure, driving-point impedance at the stapes.
  • (10) To estimate model parameters (load and tube compliances, tube inertances, characteristic impedances, and peripheral resistances) we measured ascending aortic pressure and flow in a group of five open-chest, anesthetized dogs.
  • (11) Based on the timing and direction of the changes, the data imply that the traditional band impedance measurement is more closely related to the right heart event than to that of the left heart.
  • (12) Phenobarbital did not retard growth nor impede the response to vitamin D therapy of concomitant rickets.
  • (13) The possible use of impedance measurement with scalp electrodes to detect intracranial events non-invasively was investigated by measuring the localised impedance changes during cortical spreading depression (CSD) in anaesthetised rats.
  • (14) Of these patients, 27 (acute phase) and 36 (chronic phase) were studied for tissue impedance (RT) and interface impedance (Faraday resistance RF and Helmholtz capacity CH).
  • (15) We conclude that Doppler flow velocity waveform analysis is a valuable and non-invasive method to assess impedance to blood flow through the placental circulation in pregnant sheep.
  • (16) The resistive, but not the reactive, component of longitudinal impedance was significantly greater than predicted by the models at all frequencies.
  • (17) Observations were recorded by three distinctly different methods of measurement: the surgeon, the MD-2 Impedance Analyzer, and the Acoustic Otoscope immediately before and after induction of anesthesia.
  • (18) The factors which impeded good recovery were primary brain damage due to preceding diseases such as cerebral infarct or hemorrhage, initial head injury, parkinsonism, and postoperative psychiatric disturbances.
  • (19) No protection from stimulation-associated impedance modifications was provided by the systemic administration of a material of high osmolarity (Mannitol) but the usual impedance decrease was not seen after systemic administration of a glucocorticoid.
  • (20) Twenty preterm infants ventilated for the respiratory distress syndrome were studied on 44 occasions to identify the pattern of interaction between their spontaneous respiratory efforts and the ventilator, using three techniques: (1) an oesophageal balloon and pneumotachograph, (2) impedance respirography and (3) clinical scoring.